Multiple Choice Questions on The distance between the centers of two circles of radii 6 cm and 3 cm is 15 cm The length of the tr........... for SSC CGL Exam Preparation

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Multiple Choice Questions

The distance between the centers of two circles of radii 6 cm and 3 cm is 15 cm The length of the tr...........

Quantitative Aptitude (CGL) Coordinate Geometry
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    The distance between the centers of two circles of radii 6 cm and 3 cm is 15 cm. The length of the transverse common tangent to the circles is:

    √76cm

    Incorrect Answer

    12cm

    Correct Answer

    √66cm

    Incorrect Answer

    18cm

    Incorrect Answer
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    Explanation:

    ⇒  The length of the transverse common tangent to the circle
    =√(Distance between centres)^2−(R1+R2)^2
    =√(15)^2−(6+3)^2
    =√(225−81)⇒12cm

    By: MIRZA SADDAM HUSSAIN
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